Energy and Acid-Base Characteristics of the Surface of Nitramine Fillers for Polymeric Composites

Single crystals of nitramine fillers for special-purpose polymeric composites are characterized by the surface energy and its constituents and also by the acidity of their surface.     

Synthesis of azidooxetane statistical polymers and copolymers

Statistical polymers and copolymers were firstly synthesized by polymerization of 3,3-bis(azidomethyl) oxetane (BAMO) and 3-azidomethyl-3-methyloxetane (AMMO) in a triisobutylaluminum–water catalytic system, and their physicochemical, physicomechanical, and themochemical properties were studied. It was found that with increasing fraction of poly-AMMO in the BAMO/AMMO copolymers the strength properties of the copolymers enhance and the degree of crystallinity decreases.     

Synthesis of azidourethane block copolymers

Methods of structuring thermoreversible urethane block copolymers on the basis 3,3-bis-(azidomethyl)oxetane (BAMO) and 3-(azidomethyl)-3-methyloxetane (AMMO) were developed for the first time. Type (AB)_n copolymers of BAMO and AMMO have an amorphous crystalline structure but differ from the type B(AB)_n copolymers in that they contain less crystal phase and have a higher glass transition temperature and better physicomechanical properties.     

Chemical composition of the surface of modifying polymers in filled cellulose nitrate composites: An IR study

Russian Journal of Applied Chemistry - The surface of modifying polymers in filled cellulose nitrate composites was studied by attenuated total internal reflection IR spectroscopy. The qualitative...     

Study of compatibility in polymeric system cellulose nitrate-cellulose acetate by reversed-phase gas chromatography

Therm odynamic compatibility in the polymeric system cellulose nitrate-cellulose acetate is studied by reversed-phase gas chromatography. The excess enthalpy ΔH _ji ^E , entropy ΔS _ji ^E , and Gibbs energy ΔG _ji ^E of mixing of the components, and also the Flory-Huggins interaction parameter χ_ji are estimated.     

Degradation of cellulose nitrates in low-water media

The kinetics of degradation of cellulose nitrates in low-water organic solvents in the presence of various catalysts was examined.     

Effect of nitramine fillers on the relaxation characteristics of cellulose nitrate compounds

The effect of nitramine fillers, cyclotrimethylenetrinitramine and tetramethylenetetra-nitramine, on the molecular mobility of cellulose nitrate compounds was studied by the method of pressure relaxation in polymer melts.     

Synthesis and copolymerization of azidomethyl-substituted oxetanes: the morphology of statistical block copolymers

Chemistry of Heterocyclic Compounds - 3,3-Bis(azidomethyl)oxetane and 3-azidomethyl-3-methyloxetane were obtained by bromination of pentaerythritol and metriol with a mixture of hydrobromic,...